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Thermodynamics of zinc-chloride—sodium-chloride molten mixtures by emf measurements

✍ Scribed by C.G.M. Dukhuis; J.A.A. Ketelaar


Publisher
Elsevier Science
Year
1967
Tongue
English
Weight
328 KB
Volume
12
Category
Article
ISSN
0013-4686

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✦ Synopsis


Abstmct-The molten binary mixture Z&l,-N&l was studied by means of emf measurements on galvanic cells. In these cells Pyrex glass functions as a sodium indicator electrode. The erupt fret enthalpy of mixing at 600°C has been calculated from the emf measuremen ts. The ZnClrNaCl mixture shows a stronger ne !? tive deviation from ideal mixing behaviour than the corresponding lead chloride and cadmium c loride mixtures. R&m&-Le melange des sels fondus znc1,-NaC1 est 6tudie par la mesure des tensions &ctriques des chaines galvaniques. les ions sodium. Une &ctrode en verre Pyrex est emplo L.'exc&s de l'enthalpie libre de melange a 6otP comme tlectrode de reference pour "C est d&tit des mesures de tension &ctrique. Le melange ZnC&-NaCl donne une deviation de l'id&lite plus negative que les melanges des chlorures de plomb et de cadmium. ZasammenfassuaS-Das geschmolxene bin&e System ZnClrNacl ist in galvanischen Zellen mit Hilfe von EMK-Messungen untersucht worden. Als Referenxelektrode ftlr Natriumionen wurde eine Pyrexglas-Elektrode verwendet. Aus diesen EMK-Messungen wurde die Uberschuss Freie Mischenthalpie bei 600°C berechnet. Das Z&Is-NaCl System xelgt elne @mere negative Abweichung von der Idealit& als die entsprechenden Blcichlorid-und Cadmiumchlorid-Systcme.


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